You will then need to update the package list by running pacman with the -Syyu switch.

Directory structure

A 64-bit installation of Arch Linux with [multilib] enabled follows a directory structure similar to Debian. The 32-bit compatible libraries are located under /usr/lib32/, and the native 64-bit libraries under /usr/lib/.

Removing Multilib

To revert to a pure 64-bit system, uninstalling [multilib]:

Execute the following command to remove all packages that were installed from [multilib]